The major systems of the body interact with each other to maintain homeostasis. Which statement best describes how the circulatory and immune systems work together? Group of answer choices

A. The circulatory system returns oxygen-poor blood back to the lungs, where the immune system adds oxygen-rich blood.

B. The circulatory system influences the body's metabolism, and the immune system destroys it.

C. The immune system fights infections and the circulatory system transports white blood cells in the blood.

D. The immune system produces voluntary responses in the body, while the circulatory system produces red blood cells to fight infections.